A simple and highly stereoselective route to E-.alpha.,.beta.-unsaturated aldehydes
摘要:
Zinc bromide mediated reaction of alpha,alpha-bis(trimethylsilyl)-tert-butylacetaldimine (3) with a wide range of aldehydes takes place under mild conditions and affords the corresponding alpha,beta-unsaturated aldehydes in good yields and with very high E stereoselectivity (>98%). This procedure is successfully applied to the preparation of intermediates for retinoid and natural product synthesis.
A simple and highly stereoselective route to E-.alpha.,.beta.-unsaturated aldehydes
摘要:
Zinc bromide mediated reaction of alpha,alpha-bis(trimethylsilyl)-tert-butylacetaldimine (3) with a wide range of aldehydes takes place under mild conditions and affords the corresponding alpha,beta-unsaturated aldehydes in good yields and with very high E stereoselectivity (>98%). This procedure is successfully applied to the preparation of intermediates for retinoid and natural product synthesis.